Patents by Inventor Martin Littmann

Martin Littmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11339137
    Abstract: The present invention relates to a novel, one-stage method for preparing and isolating 3,4-dichloro-N-(2-cyanophenyl)-5-isothiazolecarboxamide (isotianil), which has microbicidal and plant-fortifying (host defence inducer) properties. In the method according to the invention, the amount of waste from the production process (e.g. solvent) is significantly reduced. The product is provided in high yield and purity (minimal amount of by-products and impurities). Compared to existing preparation methods, the method according to the invention has the advantage of low corrosiveness and high yield and high selectivity.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: May 24, 2022
    Assignees: Bayer Aktiengesellschaft, Bayer CropScience Aktiengesellschaft
    Inventors: Taraneh Farida, Martin Littmann, Ali Sanli, Kyra Larissa Pabst, Juergen Ludwig, Albert Schnatterer
  • Patent number: 11220487
    Abstract: The present invention relates to a novel process for preparing and isolating 3,4-dichloro-N-(2-cyanophenyl)-5-isothiazolecarboxamide (Isotianil), which can be used as an active compound with microbicidal properties, wherein the amount of waste materials—e.g. solvents and diluents—is significantly reduced and the process meets the requirements of industrial scale production, in particular that it provides the product in high yield, high purity, i.e. minimum amount of by-products and impurities, and can be carried out with tolerable corrosivity in industrial scale metal, in particular stainless steel, vessels or Cr—Ni—Mo alloy pressure filters or centrifuges.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: January 11, 2022
    Assignee: BAYER AKTIENGESELLSCHAFT
    Inventors: Taraneh Farida, Martin Littmann, Daniel Hartmann, Kyra Larissa Pabst, Ali Sanli
  • Patent number: 11161840
    Abstract: The present invention relates to a process for producing compounds of formula (I) in which R1, A, X and Z are as defined in the description by reaction of compounds of formula (II) or salts thereof with 2-chloro-5-chloromethylpyridine in a nonpolar aliphatic or aromatic solvent, preferably in the presence of a phase transfer catalyst.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: November 2, 2021
    Assignee: Bayer CropScience Aktiengesellschaft
    Inventors: Stefan Antons, Martin Littmann, Joerg Schulz, Wahed Ahmed Moradi, Thomas Geller
  • Publication number: 20210261536
    Abstract: The present invention relates to a process for producing compounds of formula (I) in which R1, A, X and Z are as defined in the description by reaction of compounds of formula (II) or salts thereof with 2-chloro-5-chloromethylpyridine in a nonpolar aliphatic or aromatic solvent, preferably in the presence of a phase transfer catalyst.
    Type: Application
    Filed: May 26, 2017
    Publication date: August 26, 2021
    Inventors: Stefan ANTONS, Martin LITTMANN, Joerg SCHULZ, Wahed Ahmed MORADI, Thomas GELLER
  • Publication number: 20210163430
    Abstract: The present invention relates to a novel, one-stage method for preparing and isolating 3,4-dichloro-N-(2-cyanophenyl)-5-isothiazolecarboxamide (isotianil), which has microbicidal and plant-fortifying (host defence inducer) properties. In the method according to the invention, the amount of waste from the production process (e.g. solvent) is significantly reduced. The product is provided in high yield and purity (minimal amount of by-products and impurities). Compared to existing preparation methods, the method according to the invention has the advantage of low corrosiveness and high yield and high selectivity.
    Type: Application
    Filed: April 2, 2019
    Publication date: June 3, 2021
    Inventors: Taraneh FARIDA, Martin LITTMANN, Ali SANLI, Kyra Larissa PABST, Juergen LUDWIG, Albert SCHNATTERER
  • Patent number: 10961265
    Abstract: The present invention relates primarily to a process for preparing certain phosphorus-containing cyanohydrins of the formula (I), and also to certain phosphorus-containing cyanohydrins per se and to their use for the preparation of glufosinate and/or glufosinate salts. The present invention further relates to certain mixtures particularly suitable for preparing the phosphorus-containing cyanohydrins of the formula (I).
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: March 30, 2021
    Assignee: BASF SE
    Inventors: Hans-Joachim Ressel, Kilian Tellman, Mark James Ford, Martin Littmann, Friedrich August Muehlthau, Guenter Schlegel
  • Patent number: 10941167
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: March 9, 2021
    Assignee: BASF SE
    Inventors: Hans-Joachim Ressel, Kilian Tellmann, Mark James Ford, Martin Littmann, Günter Schlegel
  • Publication number: 20200140401
    Abstract: The present invention relates to a novel process for preparing and isolating 3,4-dichloro-N-(2-cyanophenyl)-5-isothiazolecarboxamide (Isotianil), which can be used as an active compound with microbicidal properties, wherein the amount of waste materials—e.g. solvents and diluents—is significantly reduced and the process meets the requirements of industrial scale production, in particular that it provides the product in high yield, high purity, i.e. minimum amount of by-products and impurities, and can be carried out with tolerable corrosivity in industrial scale metal, in particular stainless steel, vessels or Cr—Ni—Mo alloy pressure filters or centrifuges.
    Type: Application
    Filed: June 11, 2018
    Publication date: May 7, 2020
    Inventors: Taraneh FARIDA, Martin LiTTMANN, Daniel HARTMANN, Kyra Larissa PABST, Ali SANLI
  • Patent number: 10611785
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: April 7, 2020
    Assignee: BASF SE
    Inventors: Hans-Joachim Ressel, Kilian Tellmann, Mark James Ford, Martin Littmann, Günter Schlegel
  • Patent number: 10577320
    Abstract: The present invention relates to novel methods for preparing cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives and also to novel intermediates and starting compounds, which are passed through or used in the method according to the invention.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: March 3, 2020
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Taraneh Farida, Martin Littmann, Rafael Warsitz, Michael Esser, Albert Schnatterer
  • Patent number: 10316048
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: June 11, 2019
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim Ressel, Kilian Tellmann, Mark James Ford, Martin Littmann, Günter Schlegel
  • Publication number: 20190144385
    Abstract: The present invention relates to novel methods for preparing cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives and also to novel intermediates and starting compounds, which are passed through or used in the method according to the invention.
    Type: Application
    Filed: April 26, 2017
    Publication date: May 16, 2019
    Inventors: Taraneh FARIDA, Martin LITTMANN, Rafael WARSITZ, Michael ESSER, Albert SCHNATTERER
  • Patent number: 10196410
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 5, 2019
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim Ressel, Kilian Tellmann, Mark James Ford, Martin Littmann, Günter Schlegel
  • Publication number: 20180319827
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Application
    Filed: August 30, 2016
    Publication date: November 8, 2018
    Inventors: Hans-Joachim RESSEL, Kilian TELLMANN, Mark James FORD, Martin LITTMANN, Günter SCHLEGEL
  • Publication number: 20180251480
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Application
    Filed: August 30, 2016
    Publication date: September 6, 2018
    Inventors: Hans-Joachim RESSEL, Kilian TELLMANN, Mark James FORD, Martin LITTMANN, Gunter SCHLEGEL
  • Publication number: 20180251481
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Application
    Filed: August 29, 2016
    Publication date: September 6, 2018
    Applicant: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim RESSEL, Kilian TELLMANN, Mark James FORD, Martin LITTMANN, Günter SCHLEGEL
  • Publication number: 20180244702
    Abstract: The present invention primarily relates to a process for producing certain phosphorus-containing cyanohydrin esters of formula (I) and the use thereof for producing glufosinate/glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.
    Type: Application
    Filed: August 29, 2016
    Publication date: August 30, 2018
    Inventors: Hans-Joachim RESSEL, Kilian TELLMANN, Mark James FORD, Martin LITTMANN, Günter SCHLEGEL
  • Patent number: 9850263
    Abstract: The present invention relates primarily to a process for preparing certain phosphorus-containing cyanohydrins of the formula (I), and also to certain phosphorus-containing cyanohydrins per se and to their use for the preparation of glufosinate and/or glufosinate salts. The present invention further relates to certain mixtures particularly suitable for preparing the phosphorus-containing cyanohydrins of the formula (I).
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: December 26, 2017
    Assignee: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
    Inventors: Hans-Joachim Ressel, Kilian Tellman, Mark James Ford, Martin Littmann, Friedrich August Muehlthau, Guenter Schlegel
  • Patent number: 9840459
    Abstract: The present invention relates to a novel process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis-alkoxy-substituted spirocyclic 1H-pyrrolidine-2,4-dione derivatives, and also to novel intermediates and starting materials which are produced and/or used in the process according to the invention.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: December 12, 2017
    Assignee: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Taraneh Farida, Berndt Maiwald, Martin Littmann, Winfried Etzel, Rafael Warsitz, Nicolas Henck, Michael Esser
  • Publication number: 20170313730
    Abstract: The present invention relates primarily to a process for preparing certain phosphorus-containing cyanohydrins of the formula (I), and also to certain phosphorus-containing cyanohydrins per se and to their use for the preparation of glufosinate and/or glufosinate salts. The present invention further relates to certain mixtures particularly suitable for preparing the phosphorus-containing cyanohydrins of the formula (I).
    Type: Application
    Filed: July 20, 2017
    Publication date: November 2, 2017
    Inventors: Hans-Joachim RESSEL, Kilian TELLMAN, Mark James FORD, Martin LITTMANN, Friedrich August MUEHLTHAU, Guenter SCHLEGEL